Improvement in gearing fob harvesters



-M.G.HUBBARD. GEARING r011 HARVBSTBRS.

No. 82,410. Patented Sept. 22, 1868.

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MOSES e. HUBBARD, OF SYRACUSE, New YORK.

Letters Patent No. 82,410, dated September 22, 1868.

IMPROVEMENT I [N GEARIN G FOR HARVESTERS.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, Moses G. HUBBARD, of the city of Syracuse, in the State of New York, have invented a new and usefulImprovement in Double-Speed Gearing for Harvesters, and that the following is atrae and full description thereof, reference being bad to the accompanying drawings, representing a plan of the same,

in which A and B represent the outer ends of the main shaft, to which I permanently key the driving-wheels, which also support the machine.

The main shaft may be constructed in three pieces, the left-hand end being keyed permanently to the internal cog-wheel C, and the right-hand portion 13 being keyed permanently to the ratchet-hub D, and the middle portion being keyed permanently to the external spur-cog wheel E. These two cog-wheels. Q and E,

are connected by the straight spur-cog pinion F, which is attached to the main external spur-gear wheel G,

which is loose on the shaft, and gears into the pinion H. The sliding ratchet-clutch I is attached to themiddle portion of the main shaft by thefeather K, and when this sliding ratchet is midway between the two ratchet-' hubs, the machine is wholly out of gear, but when this sliding ratchet is in contact with the ratchet-hub D, the right-hand driving-wheel thereby becomes connected with the external spur-gear wheel E, and in this position both drive-wheels will act upon the main driving-gear G and pinion H, and thence through ordinary gearing and-crank upon the cutting-apparatus. I

This arrangement produces the necessary speed of the cutters to do ordinary and diflicult mowing, which requires a highcspeed of the cutters to do the work easily and perfectly, but when ,the grass is very thin and light, or when the machine is reaping ordinary clean grain, a much slower motion of the cutters is suflicient, and then the work is much easier. and lighter.

In order to produce the slower speed for this purpose, I slide the ratchet-clutch I into contact with the permanent ratchet L, which is fastened permanently to the main frame, and thereby the external spur-cog wheel E is held in position, while the cog-wheel C revolves, and carries the main spur-driving-gear wheel G around, by means of the spur-pinion F, with a diminished speed in proportion to the difl'erence between the" sizes of the two gear-wheels C and E.

- Having thus fully described my improved gearing what I claim as'new therein, and dehire to secure by Letters Patent, ise 1. The combination of the two gear-whcels G and E, of unequal size, with the spur-pinion F and main gear-wheel G, substantially as described.

'2. The employment of two or more concentric gear-wheels, all of which may be made to revolve in driving the cutters, or one or more of which may be held stationary, for varying the speed of the cutters, as described. 3. Two or more gear-wheels, of unequal size, arranged upon line-shafts, or upon a divided axle, in com bination with a shifting-clutch, whereby the speed of the cutters may be varied, as described.

- M. G. HUBBARD.

Witnesses:

WILLIAM H. MOSELEY, GEORGE E. BUCKLEY. 

